stubbed in gcs (untested)

package.json

@@ -130,6 +130,7 @@
     "webpack-unassert-loader": "^1.2.0"
   },
   "dependencies": {
+    "@google-cloud/storage": "^2.0.3",
     "aws-sdk": "^2.328.0",
     "babel-polyfill": "^6.26.0",
     "choo": "^6.12.1",
@@ -137,6 +138,7 @@
     "convict": "^4.4.0",
     "express": "^4.16.3",
     "express-ws": "^4.0.0",
+    "fast-crc32c": "^1.0.4",
     "fluent": "^0.8.1",
     "fluent-langneg": "^0.1.0",
     "helmet": "^3.13.0",